Historical:Allenby Coal Member
Lithostratigraphy: Kewanee Group >>Carbondale Formation >>Allenby Coal Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Desmoinesian Series
Allostratigraphy: Absaroka Sequence
Authors
M. E. Hopkins and J. A. Simon
Name Origin
The Allenby Coal Member of the Carbondale Formation (Kosanke et al., 1960, p. 35, 48) is named for Allenby, Saline County.
Type Section
The type locality is in Williamson County, half a mile northeast of the village along the roadside east of a railroad crossing (NE NW 24, 9S-4E) (Kosanke, 1950, p. 79), where it occurs 1-2 feet above the Bankston Fork Limestone.
Other Names
It was formerly called the Bankston Coal (Wanless, 1939, p. 14, 76).
Correlation
It is minable locally in western Kentucky, where it is called the Baker coal.
Extent and Thickness
It is a thin coaly zone occurring in much of Williamson, Saline, and Gallatin Counties.
Description
It is generally overlain by a greenish gray or gray shale and is underlain by underclay.
References
KOSANKE, R. M., 1950, Pennsylvanian spores of Illinois and their use in correlation: Illinois State Geological Survey Bulletin 74, 128 p.
KOSANKE, R. M., J. A. SIMON, H. R. WANLESS, and H. B. WILLMAN, 1960, Classification of the Pennsylvanian strata of Illinois: Illinois State Geological Survey Report of Investigations 214, 84 p.
WANLESS, H. R., 1939, Pennsylvanian correlations in the Eastern Interior and Appalachian coal fields: Geological Society of America Special Paper 17, 130 p.
ISGS Codes
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